Paya Services EFT
Paya Services Swiftsettle
Merchants trying to cancel (void/refund) an ACH transaction must wait for funding to prevent additional issues with credits and overpayment. If the transaction is rejected and credit goes through the Merchant is at risk of losing those funds. The Merchant will want to process the refund once the transaction is funded.
Please note that with the SwiftSettle product reject transactions are returned much faster and refunds may be able to be processed sooner than funding dates.